Home / 13,538.61-20,301.46-7,917.86

Finding the Fourth Proportional to 13,538.61, 20,301.46 and 7,917.86

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Solution

The fourth proportional to 13,538.61, 20,301.46 and 7,917.86 is: 11,873.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.61 : 20,301.46 = 7,917.86 : x
  2. Step 2: Convert to fraction form
    13,538.61/20,301.46 = 7,917.86/x
  3. Step 3: Cross multiply
    13,538.61x = 20,301.46 × 7,917.86
  4. Step 4: Simplify right side
    13,538.61x = 160,744,149.03
  5. Step 5: Solve for x
    x = 160,744,149.03/13,538.61
  6. Step 6: Final answer
    x = 11,873.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.